US5434196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin composition for optical molding
Assignee: Adeka Corp
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Filing: 1994-07-01
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Granted: 1995-07-18
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Expires: 2014-07-01
Abstract
Abstract The present invention relates to a resin composition for optical molding which comprises (a) an actinic radical-curable and cationically polymerizable organic substance and (b) an actinic radiation-sensitive initiator for cationic polymerization. This composition can be cured without being affected by atomospheric oxygen.
Inventors
- 👤 Kazuo Ohkawa
- 👤 Seiichi Saito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:06
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/08; C08G65/10; C08G65/105
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
125 words
A resin composition for optical molding which comprises 50-90 parts by weight of (a) an actinic radiation-curable and cationically polymerizable organic substance containing at least 40% by weight of an epoxy resin having at least two epoxy groups in its molecule and at least 30% by weight of a vinyl ether resin having at least two vinyl groups in its molecule; (b) an actinic radiation-sensitive initiator for cationic polymerization; (c) 10-50 parts by weight of an actinic radiation-curable and radical-polymerizable organic substance at least 50% by weight of which is composed of a compound having at least three unsaturated double bonds in its molecule; and (d) an actinic radiation-sensitive initiator for radical polymerization the sum total of (a) and (c) being 100 parts by weight.
Claim 2
Dependent Claim
125 words
A resin composition for optical molding which comprises 50-90 parts by weight of (a) an actinic radiation-curable and cationically polymerizable organic substance containing at least 40% by weight of an epoxy resin having at least two epoxy groups in its molecule and at least 30% by weight of a vinyl ether resin having at least two vinyl groups in its molecule; (b) an actinic radiation-sensitive initiator for cationic polymerization; (c) 10-50 parts by weight of an actinic radiation-curable and radical-polymerizable organic substance at least 50% by weight of which is composed of a compound having at least three unsaturated double bonds in its molecule; and (d) an actinic radiation-sensitive initiator for radical polymerization the sum total of (a) and (c) being 100 parts by weight.
Claim 3
Dependent Claim
16 words
A resin composition as set forth in claim 1 or which further contains (e) a filler.
Claim 4
Dependent Claim
49 words
A resin composition as set forth in claim 1, consisting essentially of (a) 55 parts of 3,4-epoxycyclohexylmethyl 3,4-epoxycyclohexanecarboxylate and 30 parts of bisphenol A divinyl ether; (b) 3 parts of bis[4-(diphenylsulfonyl)phenyl]sulfide bisdihexafluoroantimonate; (c) 15 parts of dipentaerythritolhexaacrylate; and (d) 1 part of benzophenone, said parts being parts by weight.
Claim 5
Dependent Claim
21 words
A resin composition as set forth in claim 1, wherein said (d) actinic radiation-sensitive initiator for radical polymerization comprises a ketone.
Claim 6
Dependent Claim
39 words
A resin composition as set forth in claim 1, wherein said (d) actinic radiation-sensitive initiator for radical polymerization comprises a ketone selected from the group consisting of acetophenone compounds, benzoin ether compounds, benzil compounds, benzophenone compounds and thioxanthone compounds.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-07-17 | 1999-01-16 | 1999-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-17 | 2003-01-16 | 2003-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-17 | 2007-01-16 | 2007-07-18 | $7700.00 | Window Closed / Lapsed |